<template>
  <div class='container'>

    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card class="box-card">

      <div id="main"
           style="width: 600px;height:400px;"></div>
    </el-card>

  </div>
</template>

<script>


import { getReports } from '../../api/index'


// var echarts = require('echarts');  node.js   

// import echarts from 'echarts'
// import * as echarts from 'echarts';   //    echarts 超级 大 里面集成了很多其他的图表数据   echarts   



// 引入 echarts 核心模块，核心模块提供了 echarts 使用必须要的接口。
import * as echarts from 'echarts/core';
// 引入柱状图图表，图表后缀都为 Chart
import { BarChart, LineChart } from 'echarts/charts';
// 引入提示框，标题，直角坐标系，数据集，内置数据转换器组件，组件后缀都为 Component
import {
  TitleComponent,
  TooltipComponent,
  GridComponent,
  DatasetComponent,
  TransformComponent,
  LegendComponent,


} from 'echarts/components';
// 标签自动布局，全局过渡动画等特性
import { LabelLayout, UniversalTransition } from 'echarts/features';
// 引入 Canvas 渲染器，注意引入 CanvasRenderer 或者 SVGRenderer 是必须的一步
import { CanvasRenderer } from 'echarts/renderers';

// 注册必须的组件
echarts.use([
  TitleComponent,
  TooltipComponent,
  GridComponent,
  DatasetComponent,
  TransformComponent,
  BarChart,
  LabelLayout,
  UniversalTransition,
  CanvasRenderer,
  LegendComponent,
  LineChart

]);

// 接下来的使用就跟之前一样，初始化图表，设置配置项



let options = {
  title: {
    text: '用户来源'
  },
  tooltip: {
    trigger: 'axis',
    axisPointer: {
      type: 'cross',
      label: {
        backgroundColor: '#E9EEF3'
      }
    }
  },
  grid: {
    left: '3%',
    right: '4%',
    bottom: '3%',
    containLabel: true
  },
  xAxis: [
    {
      boundaryGap: false
    }
  ],
  yAxis: [
    {
      type: 'value'
    }
  ]
}



export default {
  name: '',
  data () {
    return {
      options

    }
  },
  methods: {
    async initGetReports () {
      let { data } = await getReports()
      this.options = {

        ...this.options,
        ...data,
      }


      var myChart = echarts.init(document.getElementById('main'));
      // console.log(myChart);
      myChart.setOption(this.options);
    }
  },
  mounted () {



    // 调用初始化方法 
    this.initGetReports()





  }
}
</script>

<style scoped lang='less'>
</style>